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/*****************************************************************************
* Copyright (c) 2010 CEA LIST.
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.xtext.glue.contentassist;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.papyrus.infra.core.utils.DisplayUtils;
import org.eclipse.uml2.uml.Element;
import org.eclipse.uml2.uml.NamedElement;
import org.eclipse.uml2.uml.Namespace;
import org.eclipse.uml2.uml.Package;
import org.eclipse.xtext.ui.editor.contentassist.ContentAssistContext;
/**
* @author CEA LIST - Initial contribution and API
*/
public class CompletionProposalUtils {
protected final static ILabelProvider labelProvider = DisplayUtils.getLabelProvider() ;
/**
* Public Utility method for creating a completion proposal
*
* @param namedElement The named element for which completion proposal must be created
* @param completionString The actual completion string
* @param displayString The way the completion is displayed in the completion list
* @param context Some information related to the context of the completion
* @return completion proposal
*/
public static CustomCompletionProposal createCompletionProposal(NamedElement namedElement,
String completionString,
String displayString,
ContentAssistContext context) {
String additionalProposalInfo = "" + namedElement.getQualifiedName() + "\n" + '(' + namedElement.eClass().getName() + ')' ;
CustomCompletionProposal completionProposal = new CustomCompletionProposal(completionString, // String to be inserted
context.getOffset(), // Offset
context.getSelectedText().length(), // Replacement length
completionString.length(), // cursorPosition
labelProvider.getImage(namedElement) , // image
" " + displayString, // displayString
null , // contextInformation
additionalProposalInfo, // additionalProposalInfo
context);
return completionProposal ;
}
/**
* Public Utility method for creating a completion proposal with replacement of prefix
*
* @param namedElement The named element for which completion proposal must be created
* @param completionString The actual completion string
* @param displayString The way the completion is displayed in the completion list
* @param context Some information related to the context of the completion
* @return completion proposal
*/
public static CustomCompletionProposal createCompletionProposalWithReplacementOfPrefix(NamedElement namedElement,
String completionString,
String displayString,
ContentAssistContext context) {
String additionalProposalInfo = "" + namedElement.getQualifiedName() + "\n" + '(' + namedElement.eClass().getName() + ')' ;
CustomCompletionProposal completionProposal = new CustomCompletionProposal(completionString, // String to be inserted
context.getOffset() - context.getPrefix().length(), // Offset
context.getPrefix().length(), // Replacement length
completionString.length(), // cursorPosition
labelProvider.getImage(namedElement) , // image
" " + displayString, // displayString
null , // contextInformation
additionalProposalInfo, // additionalProposalInfo
context);
return completionProposal ;
}
/**
* Public Utility method for creating a completion proposal
*
* @param completionString The actual completion string
* @param displayString The way the completion is displayed in the completion list
* @param context Some information related to the context of the completion
* @return completion proposal
*/
public static CustomCompletionProposal createCompletionProposal(String completionString,
String displayString,
ContentAssistContext context) {
CustomCompletionProposal completionProposal = new CustomCompletionProposal(completionString, // String to be inserted
context.getOffset(), // Offset
context.getSelectedText().length(), // Replacement length
completionString.length(), // cursorPosition
null , // image
" " + displayString, // displayString
null , // contextInformation
null, // additionalProposalInfo
context);
return completionProposal ;
}
/**
* Public utility method that computes a qualified name, taking into account packages imported by the namespace model
*
* @param namedElement
* @param model
* @return the qualified name label
*/
public static String getQualifiedNameLabelWithSufficientDepth(NamedElement namedElement, Namespace model) {
String label = "" ;
List<Package> importedPackages = new ArrayList<Package>(model.getImportedPackages()) ;
List<Namespace> visitedNamespaces = new ArrayList<Namespace>() ;
Namespace currentNamespace = namedElement.getNamespace() ;
boolean rootFound = false ;
boolean modelIsTheRoot = false ;
while (currentNamespace != null && !rootFound) {
visitedNamespaces.add(currentNamespace) ;
if (importedPackages.contains(currentNamespace) || currentNamespace == model) {
rootFound = true ;
if (currentNamespace == model)
modelIsTheRoot = true ;
}
Element owner = currentNamespace.getOwner() ;
while (owner != null && !(owner instanceof Namespace))
owner = owner.getOwner() ;
currentNamespace = owner != null ? (Namespace)owner : null ;
}
for (int i = visitedNamespaces.size() - 1 - (modelIsTheRoot ? 1 : 0) ; i >= 0 ; i--) {
label += visitedNamespaces.get(i).getName() + "::" ;
}
return label + namedElement.getName() ;
}
}
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